Add strict testing mode

  If AUTHOR_TESTING is set, and a test fails, bail out immediately.
  This indicates the algorithm is broken, and all subsequent tests
  are going to fail anyway.
Improve performance on 32-bit Perl

  The "% LIMIT" and "& 0xffffffff" are not necessary
  when using 32-bit integers
Add bigtest.t
Rename test files so bigtest.t runs last
Add ConfirmRelease to dist.ini

  Want to run tests on both 64-bit & 32-bit systems before release
Change 00-load.t to indicate 32-bit or 64-bit
Updated Changes for August 3, 2013 release of 0.02